Frequently Asked Questions

1. Why my extracted .txt is empty or incomplete?
2. Does Noki work for my language?
3. My personal data is in that .nbu - is my privacy respected if I send it to you for debug?
4. Why don't support vCalendar for .nfb?
5. What's the plan after v1.0?
6. Where to check Noki update?
7. It works flawlessly. So?
8. The mail server doesn't support big .nbu file as attachment. How to send the file?
. What's the meaning of those file name extensions?
10. Why Outlook can't view phone number of the vCard?

11. What's the trial version limitation?
12. How to regist Noki on Windows 7?
13. How to to retreive deleted SMS?

1. Why my extracted .txt is empty or incomplete?

The causes might be different:

1) The .nbu, .nfb or .nfc is backup-ed using pc suite earlier than 6.5
Noki support file backup-ed using Nokia PC Suite v6.5 and later. Please download
the latest PC Suite, backup and try Noki again.

2) Compatibility problem
It might fail due to the compatibility between different phone models and different versions of PC Suite. This problem is usually indicated by a fragment (of phonebook, sms, calendar or memo) in the extracted .txt. Please send the bug report (generated in trace.txt by pressing Ctrl + F1 key) or the .nbu to me via
email for analysis.  If the .nbu file is too big (> 20MB) to send, you can host or split it.

3) Extracted entries are different from those ones in the phone
PC Suite doesn't backup the SIM card phone book. Thus the extracted entries might be less than those in the phone. To fix, just copy the SIM card phone book into flash and re-backup the .nbu - all entries will be there then.

4) Copyright protected files
Some files on the phone are copyrighted material. PC Suite won't bring them up to the pc. The detail is described in the backup log of content copier.

2. Does Noki work for my language?

With UNICODE support, Noki works for all languages though it just has an English interface. Here is a list based on feedbacks:

  • Brazil Portuguese,
  • Dutch,
  • French,
  • German,
  • Greek,
  • Hebrew,
  • Hungarian,
  • Italian, 
  • Russian,
  • Simplified Chinese,
  • Swedish,
  • Traditional Chinese.

You can use the trial version to make sure. If it works, please kindly share if your language is not in the list above.

3. My personal data is in that .nbu - is my privacy respected if I send it to you for debug?

We encourage you to send the bug report (generated in trace.txt by pressing Ctrl + F1 key) instead. The report  contains only parsing info and error context and is quite small (usually less than 100K after compressing) - quicker and safer to send.

The .nbu file may be requested if  the issue can't be solved based only on bug report. The received .nbu will only be used for debug purpose and will by no means be abused. Remove your personal / private / sensitive data if you feel necessary, but make sure leave enough number of entries (around 10) there for analysis. 

Nokia PC Suite doesn't allow us to delete info from .nbu directly. Here's a walk around: just don't select the info you want to hide in PC Suite content copier panel and re-backup.

4. Why don't support vCalendar for .nfb?

Since Noki v1.6 vCalendar gets full support for .nfb file.

5. What's the plan after v1.0?

The latest version is Noki v2.1. Several major features are planed to develop after v1.0:

1) More than txt output. (finished in Noki v1.1)
An html format (like sage style) for vCards, vCalendar, SMS and Memo will be nice to view. Microsoft Excel .csv/.xls format is another choice.

2) Symbian files explorer(finished in Noki v1.4 for .nfb and .nfc format )

3) .nfb files explorer(finished in Noki v1.4)
Though .nfb file format is no longer supported after pc suite v6.82, but the email feedback reveals there's still lots of .nfb files need to extract or convert.

4) Phone book converter to Microsoft Outlook's vCard format (finished in Noki v1.5)

5) Symbian contacts database (.cdb) explorer(finished in Noki v1.2)

6) Outlook .csv phonebook exporting(finished: for .nbu in Noki v1.5, for .nfb in v1.6)

7) SMS dialog mode

8) Private folders in the backup file(finished in Noki v1.7)

9) Better i18n support(Greek for phonebook database .cdb file in Noki v1.6)

10) Bookmark(finished in Noki v1.5)

11) Datetime for user files(finished in Noki v1.5)

12) ThunderBird contacts .csv export(finished in Noki v1.6)

13) Calender extractor for .nfb(finished in Noki v1.6)

14) Mass storage / SD card .arc backup file extract and explore(finished in Noki v1.7)

15) MMS support(finished in Noki v1.8)

16) Drag and Drop(finished in Noki v1.9)

17) MMS in backup.arc(finished in Noki v1.9)

18) Contacts group(finished in Noki v1.8)

19) Skype integration(finished in Noki v1.8)

20) vBookmark(finished in Noki v1.8)

21) Call photo for vCard(finished in Noki v1.8)

22) Calendar database(finished in Noki v1.9)

23) Nbu merger/editor

24) Call photo extraction(finished in Noki v1.9)

25) Email support (finished in Noki v2.0)

26) Image thumbnails drag and drop(finished in Noki v2.0)

27) Calendar subcategories and headlines(finished in Noki v2.0)

28) Html preview and conversion(finished in Noki v2.0)

29) Symbian S60 v5 backup file) support(finished in Noki v2.1)

30) Large .nbu (4G ~ 8G) support(finished in Noki v2.1)

31) Predefined SMS support(finished in Noki v2.1)

This feature list grows steadily as there'll be much user feedback after each release.

6. Where to check Noki update?

Several ways to get update :
1) you can subscribe to Noki's RSS feed to get informed with any update (news or releases).
2) subscribe to Noki's discussion board.
3) I also post major upgrade news to Nokia PC Suite discussion forum and developer's forum.

7. It works flawlessly. So?

You may like to share your phone model and pc suite version in the tested models list. Any comments, suggestion or feature request are welcomed.

8. The mail server doesn't support big .nbu file as attachment. How to send the file for analysis?

There're lots of file sharing site or you can use this file split tool to split the .nbu into smaller ones (5MB will be ok for most mail servers) and send via email.

9. What's the meaning of those file name extensions?

In Noki's explorer view, you can see items with different extensions. Several less known are:

  • .nbu, Nokia PC Suite backup file since v6.8
  • .nfb and .nfc, Nokia PC Suite backup file from v6.5 to v6.8
  • .arc, the archived phone memory on MMC card

        The backup file is usually named backup.arc. Since Noki v1.7, we've well supported this format.
        You may also like to read: Reset and Restore: backup.arc and MMC.

  • .vcf,  vCard  file, for phone book. Defined by IRMC.
  • .vcs, vCalendar file, for calendar. Defined by IRMC.
  • .cdb, Symbian phonebook database

    Some phones save their contacts in this database format. The database is usually named Contacts.cdb (or vContacts.cdb for earlier version) and saved in binary. You can use Noki to extract the .cdb file from .nfc, .nfb or .nbu file and convert the contacts into readable format.

    Noki can convert all contacts in .cdb to vCard format. It is a quite useful feature to restore contacts if you change to a new/non-Nokia phone.

  • .vmg, vMessage file, for text messages

    Please note that SMS doesn't have to be in vMessage format -  different version of PC Suite might save short messages in format other than vMessage format - packed sms format and Symbian sms format are two other proprietary binary format for Nokia phones. You can use Noki (choose in the context menu) to convert them into readable format like txt, xls or html.

  •  .memo, for notes and memo

    Instead of using the vNote format, PC Suite will save notes and memo in binary format. And you need to convert them to readable format. 

  • .htm under bookmark folder, for bookmark

Bookmarks are listed with .htm extension, indicating that they can be navigated or be saved into HTML file. .htm file in other folders are just nomal HTML files extracted by Noki.

  • .smil, for MMS. Defined by W3C.

    The Synchronized Multimedia Integration Language (SMIL, pronounced "smile") enables simple authoring of interactive audiovisual presentations. SMIL is typically used for "rich media"/multimedia presentations which integrate streaming audio and video with images, text or any other media type. SMIL is being implemented on handheld and mobile devices and has also spawned the subset known as MMS (Multimedia Messaging Service).

10. Why Outlook can't view phone number of the vCard?

It's caused by the incompatibility of vCard between Nokia and Microsoft. The number slot's name definition is slightly different. You can view them well in PC Suite's contact editor.

You can choose "merge into an outlook .csv file" in the right click menu on the phonebook folder. Then you can view all the field of vCard in Outlook or Outlook Express.

11. What's the trial version limitation?

The trial version has extraction limiations:

1. Media files: 30
2. Phonebook: 50
3. Text messages: 50
4. Calender: 30
5. Note/Memo: 30
6. Bookmark: 20
7. MMS: 20
8. Email: 20
9. SD card files: 50

Registered version of Noki will remove the limit plus free upgrades for all Noki v2.x versions.

You can open the backup file using the free trial verison to make sure it works before purchasing.

12. How to regist Noki on Windows 7?

Windows 7 has User Access Control (or UAC). UAC will prevent you from copying registraion key file into the installation folder of Noki. You need to disable UAC to copy the reginstration key.

13. How to retreive deleted SMS using Noki?

It depends:

1) if you backuped your Nokia phone before deleting the SMS

You can extract the text messages using Noki or convert them to .txt, .html. If you just want to extract the sms section of the backup file, you can try Noki Gems.

2) if you backuped your Nokia phone after deleting the SMS

If it's a Symbian phone, you can find part of your SMS in smsreast.dat (for inbox) and smssegst.dat (for outbox). Both files are managed by Symbian OS in folder C: or D:/system/data/ to send/receive SMS as series of PDU from the network - that's why you can only see fragments of your sms instead of complete ones.

So if there's really important info in your deleted SMS, you can extract those two .dat files using Noki and check the content of them using any text editor. gives more info on these two files (from the programmer perspective):

smssegst.dat: The SMS message is split into individual PDUs before sending them to the network. The segmentation store is used to store the PDUs. The segmentation store enables the client applications to receive the status report of the PDUs.

smsreast.dat: The reassembly store is used to individual PDUs when received from the network. Once all the PDUs of a message are received they are reassembled by the SMS stack. A complete message is then created, the message is ready for the client applications.

If you want to dig further, please check the Symiban document

3) If you backuped phone memory and there's a Mail or Mail2 folder

Open the backup file using Noki:

  • Navigate to C: if you use Phone Memory to store your messages (default) and D: if you use Storage Card as your SMS storage location.
  • Now navigate to and open “system” folder.
  • Now open the “mail” folder.
  • This folder should contain many folders named similar to 0010001_s etc. with files named similar to 00100000 etc., These files are the actual deleted messages, Simply, use the FExplorer inbuild text viewer to view these files, You will need to browse through every folder and open all files inside them until you get the required SMS.

Remember, these guidelines are not applicable for every phone. There are some phones that simply will not retrieve messages you are looking for.

Question collected from keen users' feedback on Noki since release v0.2.

If you found there's no (clear enough) answers to your question, please email me directly.

You may also like to read the Tips and Tricks to use Noki more effectively.